"""Test helpers for UniFi Protect."""

from __future__ import annotations

from collections.abc import Callable, Sequence
from dataclasses import dataclass
from datetime import timedelta
from typing import Any
from unittest.mock import Mock

from pyunifiprotect import ProtectApiClient
from pyunifiprotect.data import (
    Bootstrap,
    Camera,
    Event,
    EventType,
    ModelType,
    ProtectAdoptableDeviceModel,
    WSSubscriptionMessage,
)
from pyunifiprotect.data.bootstrap import ProtectDeviceRef
from pyunifiprotect.test_util.anonymize import random_hex

from homeassistant.const import Platform
from homeassistant.core import HomeAssistant, split_entity_id
from homeassistant.helpers import entity_registry as er
from homeassistant.helpers.entity import EntityDescription
import homeassistant.util.dt as dt_util

from tests.common import MockConfigEntry, async_fire_time_changed


@dataclass
class MockUFPFixture:
    """Mock for NVR."""

    entry: MockConfigEntry
    api: ProtectApiClient
    ws_subscription: Callable[[WSSubscriptionMessage], None] | None = None

    def ws_msg(self, msg: WSSubscriptionMessage) -> Any:
        """Emit WS message for testing."""

        if self.ws_subscription is not None:
            return self.ws_subscription(msg)


def reset_objects(bootstrap: Bootstrap):
    """Reset bootstrap objects."""

    bootstrap.cameras = {}
    bootstrap.lights = {}
    bootstrap.sensors = {}
    bootstrap.viewers = {}
    bootstrap.events = {}
    bootstrap.doorlocks = {}
    bootstrap.chimes = {}


async def time_changed(hass: HomeAssistant, seconds: int) -> None:
    """Trigger time changed."""
    next_update = dt_util.utcnow() + timedelta(seconds)
    async_fire_time_changed(hass, next_update)
    await hass.async_block_till_done()


async def enable_entity(
    hass: HomeAssistant, entry_id: str, entity_id: str
) -> er.RegistryEntry:
    """Enable a disabled entity."""
    entity_registry = er.async_get(hass)

    updated_entity = entity_registry.async_update_entity(entity_id, disabled_by=None)
    assert not updated_entity.disabled
    await hass.config_entries.async_reload(entry_id)
    await hass.async_block_till_done()

    return updated_entity


def assert_entity_counts(
    hass: HomeAssistant, platform: Platform, total: int, enabled: int
) -> None:
    """Assert entity counts for a given platform."""

    entity_registry = er.async_get(hass)

    entities = [
        e for e in entity_registry.entities if split_entity_id(e)[0] == platform.value
    ]

    assert len(entities) == total
    assert len(hass.states.async_all(platform.value)) == enabled


def normalize_name(name: str) -> str:
    """Normalize name."""

    return name.lower().replace(":", "").replace(" ", "_").replace("-", "_")


def ids_from_device_description(
    platform: Platform,
    device: ProtectAdoptableDeviceModel,
    description: EntityDescription,
) -> tuple[str, str]:
    """Return expected unique_id and entity_id for a give platform/device/description combination."""

    entity_name = normalize_name(device.display_name)
    description_entity_name = normalize_name(str(description.name))

    unique_id = f"{device.mac}_{description.key}"
    entity_id = f"{platform.value}.{entity_name}_{description_entity_name}"

    return unique_id, entity_id


def generate_random_ids() -> tuple[str, str]:
    """Generate random IDs for device."""

    return random_hex(24).lower(), random_hex(12).upper()


def regenerate_device_ids(device: ProtectAdoptableDeviceModel) -> None:
    """Regenerate the IDs on UFP device."""

    device.id, device.mac = generate_random_ids()


def add_device_ref(bootstrap: Bootstrap, device: ProtectAdoptableDeviceModel) -> None:
    """Manually add device ref to bootstrap for lookup."""

    ref = ProtectDeviceRef(id=device.id, model=device.model)
    bootstrap.id_lookup[device.id] = ref
    bootstrap.mac_lookup[device.mac.lower()] = ref


def add_device(
    bootstrap: Bootstrap, device: ProtectAdoptableDeviceModel, regenerate_ids: bool
) -> None:
    """Add test device to bootstrap."""

    if device.model is None:
        return

    device._api = bootstrap.api
    if isinstance(device, Camera):
        for channel in device.channels:
            channel._api = bootstrap.api

    if regenerate_ids:
        regenerate_device_ids(device)
    device._initial_data = device.dict()

    devices = getattr(bootstrap, f"{device.model.value}s")
    devices[device.id] = device
    add_device_ref(bootstrap, device)


async def init_entry(
    hass: HomeAssistant,
    ufp: MockUFPFixture,
    devices: Sequence[ProtectAdoptableDeviceModel],
    regenerate_ids: bool = True,
) -> None:
    """Initialize Protect entry with given devices."""

    reset_objects(ufp.api.bootstrap)
    for device in devices:
        add_device(ufp.api.bootstrap, device, regenerate_ids)

    await hass.config_entries.async_setup(ufp.entry.entry_id)
    await hass.async_block_till_done()


async def remove_entities(
    hass: HomeAssistant,
    ufp: MockUFPFixture,
    ufp_devices: list[ProtectAdoptableDeviceModel],
) -> None:
    """Remove all entities for given Protect devices."""

    for ufp_device in ufp_devices:
        if not ufp_device.is_adopted_by_us:
            continue

        devices = getattr(ufp.api.bootstrap, f"{ufp_device.model.value}s")
        del devices[ufp_device.id]

        mock_msg = Mock()
        mock_msg.changed_data = {}
        mock_msg.old_obj = ufp_device
        mock_msg.new_obj = None
        ufp.ws_msg(mock_msg)

    await time_changed(hass, 30)


async def adopt_devices(
    hass: HomeAssistant,
    ufp: MockUFPFixture,
    ufp_devices: list[ProtectAdoptableDeviceModel],
    fully_adopt: bool = False,
):
    """Emit WS to re-adopt give Protect devices."""

    for ufp_device in ufp_devices:
        if fully_adopt:
            ufp_device.is_adopted = True
            ufp_device.is_adopted_by_other = False
            ufp_device.can_adopt = False

        devices = getattr(ufp.api.bootstrap, f"{ufp_device.model.value}s")
        devices[ufp_device.id] = ufp_device

        mock_msg = Mock()
        mock_msg.changed_data = {}
        mock_msg.new_obj = Event(
            api=ufp_device.api,
            id=random_hex(24),
            smart_detect_types=[],
            smart_detect_event_ids=[],
            type=EventType.DEVICE_ADOPTED,
            start=dt_util.utcnow(),
            score=100,
            metadata={"device_id": ufp_device.id},
            model=ModelType.EVENT,
        )
        ufp.ws_msg(mock_msg)

    await hass.async_block_till_done()
